US8758719B2 Process for converting FGD gypsum to

A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of liquids to maximize the purity of reaction products while minimizing reaction times, and further include embodiments of the process that provide a yield of both ammonium sulfate and

Ammonium sulfate (NH4)2SO4 PubChem

Ammonium sulfate (NH4)2SO4 or H8N2O4S In the saturator process, Finely ground gypsum is reacted with ammonium carbonate solution in a cascade of stirred

What is Gypsum? Gypsum Association

Chemically known as "calcium sulfate dihydrate," gypsum contains calcium, sulfur bound to oxygen, and water. In a process called calcining,

conversion of gypsum to ammonium sulfate

Ammonium sulfate and gypsum are also, A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including

Utilization of the gypsum from a wet limestone flue gas

The authors have been developing a process which converts FGDgypsum to ammonium sulfate fertilizer with precipitated calcium carbonate as a byproduct during the conversion.

design of the ammonium sulfate plant from gypsum

US8758719B2 Process for converting FGD gypsum to, A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of liquids to maximize the purity of reaction products while minimizing reaction times, and further include embodiments of the